When using the Autotransformer in schematic 4, does the fan still function normally? I’ve been told by someone in a Facebook group that theirs did not run and a Victron dealer told them that’s because the neutral is spliced together between the two inverters so the board in the autotransformer does not get power since the circuit cannot be completed. I called the dealer and they said Victron told the it should work but when they bench tested on it did not work. I s been waiting a few days for further information so posting here. Anyone have any related information?
https://www.victronenergy.com/upload/documents/AT-4-stacked-inverter-2x120V-to-120-240V-with-2xQuattro-120V-REV-B.pdf